Known plaintext - XOR

20 Points  

For this challenge you will need to decypher a simple XORed picture.

Author

Ryscrow,  

Level  Difficulty

Validations

3243 Challengers 4%

Note  Notation

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165 Votes
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Solution 4 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
drakes00   Known plaintext - XOR en 20 August 2018 at 13:37
ds108j   Clair connu - XOR fr 20 August 2018 at 12:15
mglarragan   Known plaintext - XOR es 20 August 2018 at 11:46
TorkyBlorky   Known plaintext - XOR en 20 August 2018 at 01:37
Broska   Clair connu - XOR fr 19 August 2018 at 18:35
SuperFred   Clair connu - XOR fr 19 August 2018 at 16:53
P@ssw0rd   Known plaintext - XOR en 19 August 2018 at 09:42
rodo   Known plaintext - XOR en 18 August 2018 at 23:49
r0l   Clair connu - XOR fr 18 August 2018 at 10:29
Werclues   Known plaintext - XOR en 17 August 2018 at 23:35

Challenges associated with this section 38 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 28% 25289 5 Xartrick 10
pas_valide Encoding - UU 22% 20276 5 g0uZ 9
pas_valide Hash - Message Digest 5 23% 20990 5 g0uZ 4
pas_valide Hash - SHA-2 12% 10609 5 koma 3
pas_valide Shift cipher 7% 6293 10 m31z0nyx 5
pas_valide Pixel Madness 6% 5051 15 Ryscrow 10
pas_valide ELF32 - PID encryption 4% 3289 15 Lu33Y 10
pas_valide File - PKZIP 5% 3776 15 g0uZ 5
pas_valide Monoalphabetic substitution - Caesar 6% 5114 15 Arod 4
pas_valide Known plaintext - XOR 4% 3243 20 Ryscrow 4
pas_valide Code - Pseudo Random Number Generator 2% 1231 20 Tosh 4
pas_valide File - Insecure storage 1 5% 3993 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 3517 20 Arod 3
pas_valide System - Android lock pattern 3% 2232 20 Silentd 2
pas_valide Transposition - Rail Fence 3% 2070 20 YellowS4 2
pas_valide AES - CBC - Bit-Flipping Attack 1% 71 25 Tie21 0
pas_valide AES - ECB 1% 920 25 cez40 4
pas_valide LFSR - Known plaintext 1% 112 25 Brissouille 1
pas_valide RSA - Factorisation 2% 1440 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 310 25 Zweisamkeit 2
pas_valide Service - Timing attack 2% 1144 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1270 25 koma 6
pas_valide Initialisation Vector 1% 655 25 notfound, manticore 3
pas_valide GEDEFU 1% 201 30 makhno 1
pas_valide RSA - Corrupted key V1 1% 65 30 blackndoor 1
pas_valide RSA - Continued fractions 1% 519 30 sambecks 1
pas_valide RSA - Common modulus 1% 402 30 franb 2
pas_valide Service - Hash length extension attack 1% 314 30 koma 1
pas_valide RSA - Padding 1% 91 35 Tosh 0
pas_valide AES128 - CTR 1% 294 40 Tosh 1
pas_valide Discrete logarithm problem 1% 398 40 Thanat0s, RFC4949 2
pas_valide RSA - Corrupted key V2 1% 45 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 419 40 franb 3
pas_valide Enigma Machine 1% 66 50 peyman 0
pas_valide ECDHE 1% 78 60 Tosh 1
pas_valide Service - CBC Padding 1% 493 60 koma 0
pas_valide Polyalphabetic substitution - One Time Pad 1% 216 60 Thanat0s 0
pas_valide Hash - SHA-3 1% 35 75 Revenger 1